import * as plugins from './bunq.plugins';
import { BunqAccount } from './bunq.classes.account';
import { IBunqNotificationFilter } from './bunq.interfaces';

export class BunqNotification {
  private bunqAccount: BunqAccount;

  constructor(bunqAccount: BunqAccount) {
    this.bunqAccount = bunqAccount;
  }

  /**
   * Create notification filter for URL callbacks
   */
  public async createUrlFilter(options: {
    category: 'BILLING' | 'CARD' | 'CHAT' | 'DRAFT_PAYMENT' | 'IDEAL' | 
              'MASTERCARD' | 'MONETARY_ACCOUNT' | 'PAYMENT' | 'REQUEST' | 
              'SCHEDULE_RESULT' | 'SCHEDULE_STATUS' | 'SHARE' | 'TAB_RESULT' | 
              'USER' | 'FINANCIAL_INSTITUTION' | 'WHITELIST' | 'WHITELIST_RESULT' | 
              'REQUEST_INQUIRY' | 'REQUEST_INQUIRY_CHAT' | 'REQUEST_RESPONSE' | 
              'SOFORT' | 'BUNQME_TAB' | 'SUPPORT_CONVERSATION' | 'SLICE_REGISTRY_ENTRY';
    notificationTarget: string;
  }): Promise<number> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().post(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-url`,
      {
        notification_filters: [{
          notification_delivery_method: 'URL',
          notification_target: options.notificationTarget,
          category: options.category
        }]
      }
    );

    if (response.Response && response.Response[0] && response.Response[0].Id) {
      return response.Response[0].Id.id;
    }

    throw new Error('Failed to create notification filter');
  }

  /**
   * Create notification filter for push notifications
   */
  public async createPushFilter(options: {
    category: string;
  }): Promise<number> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().post(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-push`,
      {
        notification_filters: [{
          notification_delivery_method: 'PUSH',
          category: options.category
        }]
      }
    );

    if (response.Response && response.Response[0] && response.Response[0].Id) {
      return response.Response[0].Id.id;
    }

    throw new Error('Failed to create push notification filter');
  }

  /**
   * List URL notification filters
   */
  public async listUrlFilters(): Promise<any[]> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().list(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-url`
    );

    return response.Response || [];
  }

  /**
   * List push notification filters
   */
  public async listPushFilters(): Promise<any[]> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const response = await this.bunqAccount.getHttpClient().list(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-push`
    );

    return response.Response || [];
  }

  /**
   * Delete URL notification filter
   */
  public async deleteUrlFilter(filterId: number): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().delete(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-url/${filterId}`
    );
  }

  /**
   * Delete push notification filter
   */
  public async deletePushFilter(filterId: number): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().delete(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-push/${filterId}`
    );
  }

  /**
   * Clear all URL notification filters
   */
  public async clearAllUrlFilters(): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().delete(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-url`
    );
  }

  /**
   * Clear all push notification filters
   */
  public async clearAllPushFilters(): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    await this.bunqAccount.getHttpClient().delete(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-push`
    );
  }

  /**
   * Create multiple notification filters at once
   */
  public async createMultipleUrlFilters(filters: Array<{
    category: string;
    notificationTarget: string;
  }>): Promise<void> {
    await this.bunqAccount.apiContext.ensureValidSession();
    
    const notificationFilters = filters.map(filter => ({
      notification_delivery_method: 'URL' as const,
      notification_target: filter.notificationTarget,
      category: filter.category
    }));

    await this.bunqAccount.getHttpClient().post(
      `/v1/user/${this.bunqAccount.userId}/notification-filter-url`,
      {
        notification_filters: notificationFilters
      }
    );
  }

  /**
   * Setup webhook endpoint for all payment events
   */
  public async setupPaymentWebhook(webhookUrl: string): Promise<void> {
    const paymentCategories = [
      'PAYMENT',
      'DRAFT_PAYMENT',
      'SCHEDULE_RESULT',
      'REQUEST_INQUIRY',
      'REQUEST_RESPONSE',
      'MASTERCARD',
      'IDEAL',
      'SOFORT'
    ];

    const filters = paymentCategories.map(category => ({
      category,
      notificationTarget: webhookUrl
    }));

    await this.createMultipleUrlFilters(filters);
  }

  /**
   * Setup webhook endpoint for all account events
   */
  public async setupAccountWebhook(webhookUrl: string): Promise<void> {
    const accountCategories = [
      'MONETARY_ACCOUNT',
      'BILLING',
      'USER',
      'CARD'
    ];

    const filters = accountCategories.map(category => ({
      category,
      notificationTarget: webhookUrl
    }));

    await this.createMultipleUrlFilters(filters);
  }

  /**
   * Verify webhook signature
   */
  public verifyWebhookSignature(
    body: string,
    signature: string
  ): boolean {
    // Get server public key from context
    const serverPublicKey = this.bunqAccount.apiContext.getSession().getContext().serverPublicKey;
    
    if (!serverPublicKey) {
      throw new Error('Server public key not available');
    }

    // Verify the signature
    const verify = plugins.crypto.createVerify('SHA256');
    verify.update(body);
    verify.end();
    
    return verify.verify(serverPublicKey, signature, 'base64');
  }
}

/**
 * Webhook handler class for processing incoming notifications
 */
export class BunqWebhookHandler {
  private handlers: Map<string, Function> = new Map();

  /**
   * Register a handler for a specific event category
   */
  public on(category: string, handler: Function): void {
    this.handlers.set(category, handler);
  }

  /**
   * Process incoming webhook notification
   */
  public async process(notification: any): Promise<void> {
    const notificationObject = notification.NotificationUrl;
    
    if (!notificationObject) {
      throw new Error('Invalid notification format');
    }

    const category = notificationObject.category;
    const handler = this.handlers.get(category);
    
    if (handler) {
      await handler(notificationObject);
    }

    // Also check for wildcard handler
    const wildcardHandler = this.handlers.get('*');
    if (wildcardHandler) {
      await wildcardHandler(notificationObject);
    }
  }

  /**
   * Register handler for payment events
   */
  public onPayment(handler: (payment: any) => void): void {
    this.on('PAYMENT', (notification: any) => {
      if (notification.object && notification.object.Payment) {
        handler(notification.object.Payment);
      }
    });
  }

  /**
   * Register handler for monetary account events
   */
  public onMonetaryAccount(handler: (account: any) => void): void {
    this.on('MONETARY_ACCOUNT', (notification: any) => {
      if (notification.object) {
        handler(notification.object);
      }
    });
  }

  /**
   * Register handler for card events
   */
  public onCard(handler: (card: any) => void): void {
    this.on('CARD', (notification: any) => {
      if (notification.object) {
        handler(notification.object);
      }
    });
  }

  /**
   * Register handler for request events
   */
  public onRequest(handler: (request: any) => void): void {
    this.on('REQUEST_INQUIRY', (notification: any) => {
      if (notification.object && notification.object.RequestInquiry) {
        handler(notification.object.RequestInquiry);
      }
    });
  }

  /**
   * Register handler for all events
   */
  public onAll(handler: (notification: any) => void): void {
    this.on('*', handler);
  }
}